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From "ars" https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=7188 

Add dissection of  another flavor of Cisco RUDP/SM stack called BSM V1 (version 1 versus
Version 0 used for SS7). It used at place where IUA should be used namely for
backhauling ISDN PRI from Media Gateway to Media Gateway Controller.

svn path=/trunk/; revision=42219
This commit is contained in:
Anders Broman 2012-04-24 08:52:18 +00:00
parent 1fb4d00e1c
commit 299228b7d7
1 changed files with 39 additions and 0 deletions
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39
epan/dissectors/packet-cisco-sm.c
View File

@ -105,6 +105,8 @@ static const value_string sm_pdu_type_value[] = {
};
/* TODO: Change to useful name once known */
#define SM_PROTOCOL_X004 0x0004 /* https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=7188 */
/* RUDP/SM stack called BSM V1 (version 1 versus Version 0 used for SS7). */
#define SM_PROTOCOL_X100 0x0100
#define SM_PROTOCOL_X101 0x0101
#define SM_PROTOCOL_X114 0x0114
@ -131,6 +133,7 @@ static gint ett_sm = -1;
static dissector_handle_t sdp_handle;
static dissector_handle_t mtp3_handle;
static dissector_handle_t q931_handle;
static dissector_handle_t data_handle;
/* Code to actually dissect the packets */
@ -166,6 +169,41 @@ dissect_sm(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
protocol = tvb_get_ntohs(tvb,offset);
offset = offset + 2;
switch(protocol){
/* start case RUDP BSM v.1 ---------------------------------------------------------- */
case SM_PROTOCOL_X004:
if (!tree)
return;
proto_tree_add_item(sm_tree, hf_sm_msg_id, tvb, offset, 2, FALSE);
offset = offset +2;
msg_type = tvb_get_ntohs(tvb,offset);
proto_tree_add_uint_format(sm_tree, hf_sm_msg_type, tvb, offset, 2, msg_type,
"Message type: %s (0x%0x)", val_to_str(msg_type, sm_pdu_type_value, "reserved"),
msg_type);
msg_type = tvb_get_ntohs(tvb,offset);
offset = offset + 2;
proto_tree_add_item(sm_tree, hf_sm_channel, tvb, offset, 2, FALSE);
offset = offset + 2;
proto_tree_add_item(sm_tree, hf_sm_bearer, tvb, offset, 2, FALSE);
offset = offset +2;
proto_tree_add_item(sm_tree, hf_sm_len, tvb, offset, 2, FALSE);
length = tvb_get_ntohs(tvb,offset);
offset = offset +2;
proto_item_set_len(ti, 16);
if (length > 0) {
next_tvb = tvb_new_subset(tvb, offset, length, length);
if ((msg_type == PDU_MTP3_TO_SLT || msg_type == PDU_MTP3_FROM_SLT)) {
call_dissector(q931_handle, next_tvb, pinfo, tree);
} else {
call_dissector(data_handle, next_tvb, pinfo, tree);
}
}
break;
/* end case RUDP BSM v.1 ---------------------------------------------------------- */
case SM_PROTOCOL_X100:
case SM_PROTOCOL_X122:
if (!tree)
@ -365,6 +403,7 @@ proto_reg_handoff_sm(void)
{
sdp_handle = find_dissector("sdp");
mtp3_handle = find_dissector("mtp3");
q931_handle = find_dissector("q931");
data_handle = find_dissector("data");
}